| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.net; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.RemoteException; |
| import android.os.Handler; |
| import android.os.ServiceManager; |
| import android.os.SystemProperties; |
| import com.android.internal.telephony.ITelephony; |
| import com.android.internal.telephony.Phone; |
| import com.android.internal.telephony.TelephonyIntents; |
| import android.net.NetworkInfo.DetailedState; |
| import android.telephony.TelephonyManager; |
| import android.util.Log; |
| import android.text.TextUtils; |
| |
| import java.util.List; |
| import java.util.ArrayList; |
| |
| /** |
| * Track the state of mobile data connectivity. This is done by |
| * receiving broadcast intents from the Phone process whenever |
| * the state of data connectivity changes. |
| * |
| * {@hide} |
| */ |
| public class MobileDataStateTracker extends NetworkStateTracker { |
| |
| private static final String TAG = "MobileDataStateTracker"; |
| private static final boolean DBG = false; |
| |
| private Phone.DataState mMobileDataState; |
| private ITelephony mPhoneService; |
| private static final String[] sDnsPropNames = { |
| "net.rmnet0.dns1", |
| "net.rmnet0.dns2", |
| "net.eth0.dns1", |
| "net.eth0.dns2", |
| "net.eth0.dns3", |
| "net.eth0.dns4", |
| "net.gprs.dns1", |
| "net.gprs.dns2" |
| }; |
| private List<String> mDnsServers; |
| private String mInterfaceName; |
| private int mDefaultGatewayAddr; |
| private int mLastCallingPid = -1; |
| |
| /** |
| * Create a new MobileDataStateTracker |
| * @param context the application context of the caller |
| * @param target a message handler for getting callbacks about state changes |
| */ |
| public MobileDataStateTracker(Context context, Handler target) { |
| super(context, target, ConnectivityManager.TYPE_MOBILE, |
| TelephonyManager.getDefault().getNetworkType(), "MOBILE", |
| TelephonyManager.getDefault().getNetworkTypeName()); |
| mPhoneService = null; |
| mDnsServers = new ArrayList<String>(); |
| } |
| |
| /** |
| * Begin monitoring mobile data connectivity. |
| */ |
| public void startMonitoring() { |
| IntentFilter filter = |
| new IntentFilter(TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED); |
| filter.addAction(TelephonyIntents.ACTION_DATA_CONNECTION_FAILED); |
| filter.addAction(TelephonyIntents.ACTION_SERVICE_STATE_CHANGED); |
| |
| Intent intent = mContext.registerReceiver(new MobileDataStateReceiver(), filter); |
| if (intent != null) |
| mMobileDataState = getMobileDataState(intent); |
| else |
| mMobileDataState = Phone.DataState.DISCONNECTED; |
| } |
| |
| private static Phone.DataState getMobileDataState(Intent intent) { |
| String str = intent.getStringExtra(Phone.STATE_KEY); |
| if (str != null) |
| return Enum.valueOf(Phone.DataState.class, str); |
| else |
| return Phone.DataState.DISCONNECTED; |
| } |
| |
| private class MobileDataStateReceiver extends BroadcastReceiver { |
| public void onReceive(Context context, Intent intent) { |
| if (intent.getAction().equals(TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED)) { |
| Phone.DataState state = getMobileDataState(intent); |
| String reason = intent.getStringExtra(Phone.STATE_CHANGE_REASON_KEY); |
| String apnName = intent.getStringExtra(Phone.DATA_APN_KEY); |
| boolean unavailable = intent.getBooleanExtra(Phone.NETWORK_UNAVAILABLE_KEY, false); |
| if (DBG) Log.d(TAG, "Received " + intent.getAction() + |
| " broadcast - state = " + state |
| + ", unavailable = " + unavailable |
| + ", reason = " + (reason == null ? "(unspecified)" : reason)); |
| mNetworkInfo.setIsAvailable(!unavailable); |
| if (mMobileDataState != state) { |
| mMobileDataState = state; |
| |
| switch (state) { |
| case DISCONNECTED: |
| setDetailedState(DetailedState.DISCONNECTED, reason, apnName); |
| if (mInterfaceName != null) { |
| NetworkUtils.resetConnections(mInterfaceName); |
| } |
| mInterfaceName = null; |
| mDefaultGatewayAddr = 0; |
| break; |
| case CONNECTING: |
| setDetailedState(DetailedState.CONNECTING, reason, apnName); |
| break; |
| case SUSPENDED: |
| setDetailedState(DetailedState.SUSPENDED, reason, apnName); |
| break; |
| case CONNECTED: |
| mInterfaceName = intent.getStringExtra(Phone.DATA_IFACE_NAME_KEY); |
| if (mInterfaceName == null) { |
| Log.d(TAG, "CONNECTED event did not supply interface name."); |
| } |
| setupDnsProperties(); |
| setDetailedState(DetailedState.CONNECTED, reason, apnName); |
| break; |
| } |
| } |
| } else if (intent.getAction().equals(TelephonyIntents.ACTION_DATA_CONNECTION_FAILED)) { |
| String reason = intent.getStringExtra(Phone.FAILURE_REASON_KEY); |
| String apnName = intent.getStringExtra(Phone.DATA_APN_KEY); |
| if (DBG) Log.d(TAG, "Received " + intent.getAction() + " broadcast" + |
| reason == null ? "" : "(" + reason + ")"); |
| setDetailedState(DetailedState.FAILED, reason, apnName); |
| } |
| TelephonyManager tm = TelephonyManager.getDefault(); |
| setRoamingStatus(tm.isNetworkRoaming()); |
| setSubtype(tm.getNetworkType(), tm.getNetworkTypeName()); |
| } |
| } |
| |
| /** |
| * Make sure that route(s) exist to the carrier DNS server(s). |
| */ |
| public void addPrivateRoutes() { |
| if (mInterfaceName != null) { |
| for (String addrString : mDnsServers) { |
| int addr = NetworkUtils.lookupHost(addrString); |
| if (addr != -1) { |
| NetworkUtils.addHostRoute(mInterfaceName, addr); |
| } |
| } |
| } |
| } |
| |
| public void removePrivateRoutes() { |
| if(mInterfaceName != null) { |
| NetworkUtils.removeHostRoutes(mInterfaceName); |
| } |
| } |
| |
| public void removeDefaultRoute() { |
| if(mInterfaceName != null) { |
| mDefaultGatewayAddr = NetworkUtils.getDefaultRoute(mInterfaceName); |
| NetworkUtils.removeDefaultRoute(mInterfaceName); |
| } |
| } |
| |
| public void restoreDefaultRoute() { |
| // 0 is not a valid address for a gateway |
| if (mInterfaceName != null && mDefaultGatewayAddr != 0) { |
| NetworkUtils.setDefaultRoute(mInterfaceName, mDefaultGatewayAddr); |
| } |
| } |
| |
| private void getPhoneService(boolean forceRefresh) { |
| if ((mPhoneService == null) || forceRefresh) { |
| mPhoneService = ITelephony.Stub.asInterface(ServiceManager.getService("phone")); |
| } |
| } |
| |
| /** |
| * Report whether data connectivity is possible. |
| */ |
| public boolean isAvailable() { |
| getPhoneService(false); |
| |
| /* |
| * If the phone process has crashed in the past, we'll get a |
| * RemoteException and need to re-reference the service. |
| */ |
| for (int retry = 0; retry < 2; retry++) { |
| if (mPhoneService == null) break; |
| |
| try { |
| return mPhoneService.isDataConnectivityPossible(); |
| } catch (RemoteException e) { |
| // First-time failed, get the phone service again |
| if (retry == 0) getPhoneService(true); |
| } |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Return the IP addresses of the DNS servers available for the mobile data |
| * network interface. |
| * @return a list of DNS addresses, with no holes. |
| */ |
| public String[] getNameServers() { |
| return getNameServerList(sDnsPropNames); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * The mobile data network subtype indicates what generation network technology is in effect, |
| * e.g., GPRS, EDGE, UMTS, etc. |
| */ |
| public int getNetworkSubtype() { |
| return TelephonyManager.getDefault().getNetworkType(); |
| } |
| |
| /** |
| * Return the system properties name associated with the tcp buffer sizes |
| * for this network. |
| */ |
| public String getTcpBufferSizesPropName() { |
| String networkTypeStr = "unknown"; |
| TelephonyManager tm = new TelephonyManager(mContext); |
| switch(tm.getNetworkType()) { |
| case TelephonyManager.NETWORK_TYPE_GPRS: |
| networkTypeStr = "gprs"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_EDGE: |
| networkTypeStr = "edge"; |
| break; |
| case TelephonyManager.NETWORK_TYPE_UMTS: |
| networkTypeStr = "umts"; |
| break; |
| } |
| return "net.tcp.buffersize." + networkTypeStr; |
| } |
| |
| /** |
| * Tear down mobile data connectivity, i.e., disable the ability to create |
| * mobile data connections. |
| */ |
| @Override |
| public boolean teardown() { |
| getPhoneService(false); |
| /* |
| * If the phone process has crashed in the past, we'll get a |
| * RemoteException and need to re-reference the service. |
| */ |
| for (int retry = 0; retry < 2; retry++) { |
| if (mPhoneService == null) { |
| Log.w(TAG, |
| "Ignoring mobile data teardown request because could not acquire PhoneService"); |
| break; |
| } |
| |
| try { |
| return mPhoneService.disableDataConnectivity(); |
| } catch (RemoteException e) { |
| if (retry == 0) getPhoneService(true); |
| } |
| } |
| |
| Log.w(TAG, "Failed to tear down mobile data connectivity"); |
| return false; |
| } |
| |
| /** |
| * Re-enable mobile data connectivity after a {@link #teardown()}. |
| */ |
| public boolean reconnect() { |
| getPhoneService(false); |
| /* |
| * If the phone process has crashed in the past, we'll get a |
| * RemoteException and need to re-reference the service. |
| */ |
| for (int retry = 0; retry < 2; retry++) { |
| if (mPhoneService == null) { |
| Log.w(TAG, |
| "Ignoring mobile data connect request because could not acquire PhoneService"); |
| break; |
| } |
| |
| try { |
| return mPhoneService.enableDataConnectivity(); |
| } catch (RemoteException e) { |
| if (retry == 0) getPhoneService(true); |
| } |
| } |
| |
| Log.w(TAG, "Failed to set up mobile data connectivity"); |
| return false; |
| } |
| |
| /** |
| * Turn on or off the mobile radio. No connectivity will be possible while the |
| * radio is off. The operation is a no-op if the radio is already in the desired state. |
| * @param turnOn {@code true} if the radio should be turned on, {@code false} if |
| */ |
| public boolean setRadio(boolean turnOn) { |
| getPhoneService(false); |
| /* |
| * If the phone process has crashed in the past, we'll get a |
| * RemoteException and need to re-reference the service. |
| */ |
| for (int retry = 0; retry < 2; retry++) { |
| if (mPhoneService == null) { |
| Log.w(TAG, |
| "Ignoring mobile radio request because could not acquire PhoneService"); |
| break; |
| } |
| |
| try { |
| return mPhoneService.setRadio(turnOn); |
| } catch (RemoteException e) { |
| if (retry == 0) getPhoneService(true); |
| } |
| } |
| |
| Log.w(TAG, "Could not set radio power to " + (turnOn ? "on" : "off")); |
| return false; |
| } |
| |
| /** |
| * Tells the phone sub-system that the caller wants to |
| * begin using the named feature. The only supported feature at |
| * this time is {@code Phone.FEATURE_ENABLE_MMS}, which allows an application |
| * to specify that it wants to send and/or receive MMS data. |
| * @param feature the name of the feature to be used |
| * @param callingPid the process ID of the process that is issuing this request |
| * @param callingUid the user ID of the process that is issuing this request |
| * @return an integer value representing the outcome of the request. |
| * The interpretation of this value is feature-specific. |
| * specific, except that the value {@code -1} |
| * always indicates failure. For {@code Phone.FEATURE_ENABLE_MMS}, |
| * the other possible return values are |
| * <ul> |
| * <li>{@code Phone.APN_ALREADY_ACTIVE}</li> |
| * <li>{@code Phone.APN_REQUEST_STARTED}</li> |
| * <li>{@code Phone.APN_TYPE_NOT_AVAILABLE}</li> |
| * <li>{@code Phone.APN_REQUEST_FAILED}</li> |
| * </ul> |
| */ |
| public int startUsingNetworkFeature(String feature, int callingPid, int callingUid) { |
| if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { |
| mLastCallingPid = callingPid; |
| return setEnableApn(Phone.APN_TYPE_MMS, true); |
| } else { |
| return -1; |
| } |
| } |
| |
| /** |
| * Tells the phone sub-system that the caller is finished |
| * using the named feature. The only supported feature at |
| * this time is {@code Phone.FEATURE_ENABLE_MMS}, which allows an application |
| * to specify that it wants to send and/or receive MMS data. |
| * @param feature the name of the feature that is no longer needed |
| * @param callingPid the process ID of the process that is issuing this request |
| * @param callingUid the user ID of the process that is issuing this request |
| * @return an integer value representing the outcome of the request. |
| * The interpretation of this value is feature-specific, except that |
| * the value {@code -1} always indicates failure. |
| */ |
| public int stopUsingNetworkFeature(String feature, int callingPid, int callingUid) { |
| if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { |
| return setEnableApn(Phone.APN_TYPE_MMS, false); |
| } else { |
| return -1; |
| } |
| } |
| |
| /** |
| * Ensure that a network route exists to deliver traffic to the specified |
| * host via the mobile data network. |
| * @param hostAddress the IP address of the host to which the route is desired, |
| * in network byte order. |
| * @return {@code true} on success, {@code false} on failure |
| */ |
| @Override |
| public boolean requestRouteToHost(int hostAddress) { |
| if (mInterfaceName != null && hostAddress != -1) { |
| if (DBG) { |
| Log.d(TAG, "Requested host route to " + Integer.toHexString(hostAddress)); |
| } |
| return NetworkUtils.addHostRoute(mInterfaceName, hostAddress) == 0; |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public String toString() { |
| StringBuffer sb = new StringBuffer("Mobile data state: "); |
| |
| sb.append(mMobileDataState); |
| return sb.toString(); |
| } |
| |
| private void setupDnsProperties() { |
| mDnsServers.clear(); |
| // Set up per-process DNS server list on behalf of the MMS process |
| int i = 1; |
| if (mInterfaceName != null) { |
| for (String propName : sDnsPropNames) { |
| if (propName.indexOf(mInterfaceName) != -1) { |
| String propVal = SystemProperties.get(propName); |
| if (propVal != null && propVal.length() != 0 && !propVal.equals("0.0.0.0")) { |
| mDnsServers.add(propVal); |
| if (mLastCallingPid != -1) { |
| SystemProperties.set("net.dns" + i + "." + mLastCallingPid, propVal); |
| } |
| ++i; |
| } |
| } |
| } |
| } |
| if (i == 1) { |
| Log.d(TAG, "DNS server addresses are not known."); |
| } else if (mLastCallingPid != -1) { |
| /* |
| * Bump the property that tells the name resolver library |
| * to reread the DNS server list from the properties. |
| */ |
| String propVal = SystemProperties.get("net.dnschange"); |
| if (propVal.length() != 0) { |
| try { |
| int n = Integer.parseInt(propVal); |
| SystemProperties.set("net.dnschange", "" + (n+1)); |
| } catch (NumberFormatException e) { |
| } |
| } |
| } |
| mLastCallingPid = -1; |
| } |
| |
| /** |
| * Internal method supporting the ENABLE_MMS feature. |
| * @param apnType the type of APN to be enabled or disabled (e.g., mms) |
| * @param enable {@code true} to enable the specified APN type, |
| * {@code false} to disable it. |
| * @return an integer value representing the outcome of the request. |
| */ |
| private int setEnableApn(String apnType, boolean enable) { |
| getPhoneService(false); |
| /* |
| * If the phone process has crashed in the past, we'll get a |
| * RemoteException and need to re-reference the service. |
| */ |
| for (int retry = 0; retry < 2; retry++) { |
| if (mPhoneService == null) { |
| Log.w(TAG, |
| "Ignoring feature request because could not acquire PhoneService"); |
| break; |
| } |
| |
| try { |
| if (enable) { |
| return mPhoneService.enableApnType(apnType); |
| } else { |
| return mPhoneService.disableApnType(apnType); |
| } |
| } catch (RemoteException e) { |
| if (retry == 0) getPhoneService(true); |
| } |
| } |
| |
| Log.w(TAG, "Could not " + (enable ? "enable" : "disable") |
| + " APN type \"" + apnType + "\""); |
| return Phone.APN_REQUEST_FAILED; |
| } |
| } |